基于异形对称钝体的无阀压电泵的数值模拟与实验验证。

Numerical simulation and experimental verification of a valveless piezoelectric pump based on heteromorphic symmetric bluff body.

机构信息

School of Electrical and Mechanical Engineering, Jilin Economic Manage Cadre College, Changchun, Jilin 130021, China.

School of Mechatronic Engineering, Changchun University of Technology, Changchun, Jilin 130012, China.

出版信息

Rev Sci Instrum. 2022 Jun 1;93(6):065005. doi: 10.1063/5.0085161.

DOI:10.1063/5.0085161

PMID:35778023

Abstract

To improve the output performance of valveless piezoelectric pumps, this paper designed a heteromorphic symmetrical bluff body based on the Karman vortex street principle, to optimize the flow direction and velocity of the liquid. The bluff body dome height, trapezoidal unilateral angle, and rounded corner structure height at different dimensional parameters and their relationship with the pump performance were studied. The pump pressure in both positive and negative directions was simulated and analyzed. At last, a prototype of the pump was made and the output performance was tested. The experimental results show that the maximum flow rate reaches 220.6 ml/min at 190 V, 45 Hz when the bluff body dome is 8 mm, the trapezoidal unilateral angle is 5°, and the rounded corner structure is 6 mm. Moreover, when the driving voltage is 190 V and the driving frequency is 130 Hz, the maximum output pressure reaches 670 Pa.

摘要

为提高无阀压电泵的输出性能，本文基于卡门涡街原理设计了一种异形对称钝体，以优化液体的流动方向和速度。研究了不同尺寸参数下钝体穹顶高度、梯形单边角度和圆角结构高度及其与泵性能的关系。对正、负压下的泵压进行了模拟和分析。最后，制作了一个泵的原型并测试了其输出性能。实验结果表明，当钝体穹顶为 8mm、梯形单边角度为 5°且圆角结构为 6mm 时，在 190V、45Hz 的激励下，最大流量可达 220.6ml/min。此外，当驱动电压为 190V、驱动频率为 130Hz 时，最大输出压力可达 670Pa。